Catégories :
Teams
BNO
Biophotonics, Neurosciences and Optometry
The BNO team of the LuMIn Laboratory is developing new methods for the advanced characterization of multifunctional nanomaterials.
In collaboration with Céline Fiorini-Debuisschert (SPEC/CEA Paris-Saclay), the team has adapted piezoforce microscopy (PFM) to characterize the ferroelectric texture of individual nanocrystals of barium titanate (nanoBTO). This biocompatible material has many potential applications, including energy management (harvesting and storage), but its properties are still poorly characterized and understood at the nanoscale, making it difficult to take full advantage of their integration into composites. The team has also developed an optical electric potential nanosensor based on nanoBTOs doped with erbium ions, on the principle that the up-conversion efficiency of photons is modulated by the applied potential, via the inverse piezoelectric effect (deforming the crystal lattice).
Team Members
• TREUSSART François
• MARQUIER François
• PERRONET Karen
Platforms or equipement
AFM Asylum MFP 3D-Bio (Oxford Instrument), equipped with electrical measurement module (allowing in particular c-AFM, PFM, KPFM)
Publications of interest
• Muraleedharan, A. K., Co, K., Vallet, M., Zaki, A., Karolak, F., Bogicevic, C., Perronet, K., Dkhil, B., Paillard, C., Fiorini-Debuisschert, C. & Treussart, F. Ferroelectric Texture of Individual Barium Titanate Nanocrystals. ACS Nano 18, 18355 (2024). DOI:10.1021/acsnano.4c02291
• Muraleedharan, A. K., Zou, J., Vallet, M., Zaki, A., Bogicevic, C., Paillard, C., Perronet, K. & Treussart, F. Submillisecond Electric Field Sensing with an Individual Rare-Earth Doped Ferroelectric Nanocrystal. ACS Appl. Mater. Interfaces 16, 60800–60810 (2024).
Contact :
